Where does this information come from?

[Pat D]

I get that people have beliefs about what their wires do or do not accomplish. And by the posts here, no one is really likely to give room on it. But so are there no actual sources to find the test data that "scientifically" more expensive cables can make a true difference in my audio system? I'm a graphs guy too, a graph or table would be nice too

Audioholics has measured some speaker cables. Here's a link to their cable section:

http://www.audioholics.com/techtips/...les/cables.htm

They do not give any actual audibility data but one can compare it with information available on the ABX site. The ABX site shows the results of a few double blind tests. The first is for the matching criteria. If the difference is above the appropriate curves, then the differences should be audible under some circumstances. If they are below the curves, there is no guarantee that the difference is inaudible, and some maintain the curves are not stringent enough. However, appropriate cables are accurate enough to be well below the curves as shown on the ABX site..

http://www.pcavtech.com/abx/abx_crit.htm

The following link shows the results of some DBTs.

http://www.pcavtech.com/abx/abx_data.htm